Multicylinder internal-combustion engine.



L. COATALEN.

MULTICYLINDEB lNTERNAL CUMBUSUON ENGINE.

Patented July 31 1917.

APPLICATION FILED NOV. 2!. 1916.

UNITED STATES PATENT OFFICE.

LOUIS COATALEN, 0F WOLVERHAIVIPTON, ENGLAND, ASSIGNOR OF ONE-HALF TO SUN- BEAM MOTOR CAR COMPANY LIMIT ED, or WOLVERHAMPTON, ENGLAND.

MULTICYLINDER IN TERN AIL-COMBUSTION ENGINE.

Specification of Letters Patent. Patented'July 31, 1917.

Application filed November 21, 1916. Serial No. 132,641.

To all whom it may concern Be it known that I, LoUIs COATALEN, a subject of the King of Great Britain, and resident of Wolverhampton, Staffordshire, England, have invented certain new and useful Improvements in Multicylincler Internal-Combustion Engines, of which the following is a specification.

This invention relates to internal combustion engines, chiefly for aviation purposes, having three rows of cylinders with any desired number of blocks of cylinders in each row. It has for its object to provide a simple and efiicient arrangement of the exhaust and inlet pipes which will be conducive to accessibility and reliability. Inaviation engines it is very desirable that the exhaust leads be easy and be remote from the carbureters, that the induction pipes be of eflicient shape and that the carbureters be easily accessible and their control simple. These requirements are fulfilled by the present invention.

In the accompanying drawings,

Figure 1 is a diagrammatic view showing the application of the invention to a three row engine having in each row two blocks of three cylinders in each block.

Fig. 2 is an end View of an engine constructed in accordance with this invention.

Like letters indicate like parts throughout the drawings.

In V-type engines having only two rows of cylinders the requirements specified are fulfilled very simply by locating the carbureters outside the cylinder rows and conducting the exhaust gases upward by short pipes located between the two rows of cylinders, but in an engine having three rows of cylinders the problem is much more difiicult.

In this arrangement the inlet pipes A and B for the two central blocks C and D pass between the blocks E F and G H of the outer rows. For instance the front block 0 of the central row is coupled by a pipe A of this kind with central carbureter A on the right hand side of the engine and in a line with the carbureters E F for the right hand row E F of cylinders. Similarly the rear block D of the central row may have its inlet pipe B passing between those G and H of the left hand row which have their own carbureters G and H The three carbureters at each side may be connected together by a control rod X or Y and these two control rods may be operated from a single point Z, so thatall the carbureters can-be controlled from one point.

The exhaust leads J and K for the two outer rows are arranged on the inner side of those rows and the leads L for the front block C of the central row are on the opposite side to the inlet pipe A for that block, that is to say, on the left hand side while the exhaust leads M of the rear block D of the central row are on the right hand side. If each row of cylinders has a common cam shaft or cam shafts for all the cylinders in that row, in the case of the central row the one cam shaft N carries at N the inlet valve cams for the block 0 and the exhaust cams at N for the other block D, and the other cam shaft 0 operates the exhaust valve cams at O of the block 0 and the inlet cams O of the block D.

The object of this arrangement is to bring the inlet and exhaust pipes of the cylinder blocks C and D on opposite sides as will be clearly seen in Fig. 1.

It will be clear that the inlet pipes A and B are heated as they pass close to the ex haust leads of the adjacent cylinders. The inlet pipes R for the cylinders E F G and H may be heated in any known manner as by providing them with a heating jacket.

The invention has been described as applied to an engine having only two blocks of cylinders in each row, but there may obviously be more than two blocks, each with its own carbureter and inlet pipe.

By this means the carbureters are located at a convenient distance from the exhaust pipes, they are all accessible, and are all capable of operation in a simple manner.

What I claim as my invention, and desire to secure by Letters Patent, is

1. In an internal combustion engine, the combination of three rows of cylinders, a plurality of blocks of cylinders in each row, a carbureter for each block of each outer row located on the outer side of its row, and central carbureters for the blocks of the central row located between the carbureters of the outer rows, substantially as set forth.

2. In an internal combustion engine, the combination of three rows of cylinders, a plurality of blocks of cylinders in each row, a carbureter for each block of each outer row located on the outer side of its row,

central carbureters for the blocks of the central row located between the carbureters of the outer rows, and inlet pipes leading from said central carbureters t0 the blocks of cylinders of said central row which pass between the cylinder blocks of said outer rows, substantially as set forth.

3. In an internal combustion engine, the combination or three rows of cylinders, a plurality of blocks of cylinders in each row, a carbureter for each block of each outer row located on the outer side of its row, central carbureters for the blocks of the central row located between the carbureters of'the outer rows, inlet pipes leading from .Gopis of this patent may be obtained for said central carbureters to the blocks of cylinders of said central row which pass between the cylinder blocks of said outer rows, and cam shafts for said central row each of which operates the inlet valves of one block and the exhaust valves of the adjacent block, substantially as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

LOUIS COATALEN.

Witnesses SAMUEL BAYLIss, I. CUnnToN.

five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

